[SOLVED] How to fetch every package from Melpa for Emacs package-install on OS X?

How to fetch every package from Melpa for Emacs package-install on OS X?

I am on emacs version 26.3 for OS X.

This is my ~/.emacs.d/init.el file

(require 'package)

(add-to-list 'package-archives
             '("melpa" . "http://melpa.org/packages/") t)
(package-initialize)

I have run M-x eval-buffer on this init.el file. I would like to install packages from Melpa such as move-text. However M-x package-list doesn't show move-text. This is the case for many packages. How do I get alllll the packages from Melpa available for M-x package-install?

Solution

It took a few things to fix this. First of a M-x package-list is outdated by M-x list-packages (thanks @Y.E.).

Now when I M-x list-packages I got the following error: Can't use the package manager. It says The TLS Connection to elpa.org:443 is insecure.

To fix this I found this link (https://www.reddit.com/r/emacs/comments/pyevj8/what_should_i_do_cant_use_the_package_manager_it/) which advises adding package-archives for gnu and a mirror of melpa. My init.el now looks like this:

(require 'package)

(add-to-list 'package-archives
             '("melpa" . "http://melpa.org/packages/") t)

'(package-archives
   '(("gnu" . "http://elpa.gnu.org/packages/")
     ("melpa" . "http://www.mirrorservice.org/sites/stable.melpa.org/packages/")))
(package-initialize)

And it seems that it Can fetch all packages from Melpa. I don't entirely understand why gnu is necessary but it seems to be.